The persistence seam is now create/open/stat/list returning per-session
SessionHandles (read/append/flush/close); every log read and write flows
through the owning handle. The seam package exports only the service and
handle contracts, consumer-visible errors, and pure durable-data
validation helpers; each backend owns its complete storage runtime, and
the shared contract suites pin equivalent observable behavior. The
backend routes published sessions' live events by id into the active
write handle; agent-loop only acquires, seeds, and closes the handle.
Resume appends interruptedTurnClosers through its write handle;
session-query owns the revision-keyed cold cache. Legacy-only surfaces
are removed in the same swap: locate/readRaw/supportsRawArtifacts, the
legacy event-shape read migration, zstd torn-frame salvage,
DSH_SESSION_JSONL, and hook transcript_path population; a torn final
zstd frame is discarded whole; the session-list cold blank probe returns
on stat metadata (eventCount derived from the last physical row,
sizeBytes). The WebUI ZIP export serializes the logical log from a read
handle, so both backends export identically.
Refs #3245
Single RemoteError with a merge-extensible, domain-prefixed code map;
owners throw at the failure point; streams surface marked failures;
clients consume ctx.remote directly with isRemoteFailure as the only
discrimination point and construct no failure instances.
The review bot found stale 'code' configuration values in the zh tools
and agent-tool-presentation READMEs and the zh tool catalog, which the
runtime schema already rejects in favor of 'ptc'.
The rebase merged master's SDK-example and telemetry prose with the
ptc renames in the tools and CLI reference READMEs and the executor
collapse note; re-record their pair hashes.
Master replaced the session-log-version-mechanism note with the
fail-closed-session-event-vocabulary note; update the rename note's links
(en/zh) so cross-links resolve.
The subagent review found stale code mode-value prose the mechanical pass
missed: tools and agent-tool-presentation READMEs (en/zh), the CLI reference
page (DSH_TOOLS_MODE and the preset roster), the zh tool catalog, the
execute JSDoc and collapse comments in dsh-tools, the codeModeHarness
helper in agent-loop tests, and stale code-mode titles in ptc.spec.
Apply the rename pass to READMEs and docs the master sweep rewrote, fix
PTC mode anchors and the renamed-note links in the spill READMEs, and
regenerate the doc graphs.
The split kept the session-persistent vocabulary (tool/code-dispatch*,
tools-code-mode, :code:) on this PR, but several prose surfaces still named
the new values: the zh persistence/tool catalogs, the renamed Agent Notes'
event mentions, spill-policy comments, and a garbled 're-enPTC mode'
replacement. Also rename the mode value to ptc in the places the rename
missed (tools and agent-tool-presentation READMEs, the Config JSDoc, note
mode unions) and the codeModeHarness* e2e helpers.
imccyu